Wire-splicing device



July 7, 1925 J. B. GLowAcm WIRE SPLICING DEVICE Filed April 24, 1922 lof Patented July 7, 1925.

UNITED STATES JOHN IB. GLOWACKI, 0F CHICAGO, ILLINOIS.

WIRE-SPLICING DEVICE.

Application inea .spin 24, 1922. seriai No. 556,299.

To all 'whom z't may concern.'

Be it known that I, JOHN B. GLowACKI, of

a citizen of the Republic declared my intention of becoming a citizen of the United States, and a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new vand .useful Improvements in a Wire-Splicing Device; and I do hereby declare that the ollowin is a. full, clear, and exact description of t e same, reference being -had to the accompanying drawings, 'and to the numerals of reference marked thereon, which form a part of this specificatio It is an object of this invention to provide a connector which may be quick y and readily ap lied for unitin wires.

It is a rther object o? this invention to provide a device which shall take the place of the ordinary twisted 'unction between electric wires and render tlle usual junction box unnecessa IIt is a further object of the invention to provide a. joint between two electrical wires which shall afford ood electrical contact, shall hold the wires mly against displacement, shall be capable of sustaining a strong pull and shall amply protect the junction against leaka e.

It is a furt er object of this invention to provide a joint for electrical contact which shall have a neat and well finished appearance and shall not deteriorate in use elther by abrasion of the insulation or by the wires working loose.

It is a further object of this invention to provide a joint for electrical wires which can be applied without the need of any other tools than the usual electricians pliers.

'Other and further important objects of of Poland, having this invention will be apparent from the disclosures in the drawings and specification.

The invention (in a preferred form) lis illustrated on the drawings and hereinafter more fully described.

On the drawings:

Fig-ure 1 is an external view-0f the finished `oint. J Figure 2 is a longitudinal section thereof.

Figure 3 is a view of the joint in the course of preparation. v

Figure 4 illustrates a later step in the preparation.

Figure 5 is an end view of the joint.

Figure 6 is Figure 4. Figure 7 is a enlarged scale.

As shown on the drawings:

The joint is adapted for uniting a heavy wire 1, having a covering 2 of rubber and a woven covering 3 outside thereof, with a smaller wire 4 having a rubber covering 5 and a woven covering 6 outside thereof. It will be obvious, however, from the following description that the joint may be used for uniting other wires and is not limited to the form of wires illustrated. The conductor 4 is illustrated as made up of many small wires twisted to ether. In the use of the joint in uniting xture wires to the house wiring, it will'frequently happen that one of the two wires tobe united 1s of this character, but the invention is not limited to such cases.

The wire l is' bent upon itself at the joint as indicated at 7 in Figure 7 and the part 8 which is thus bent back lies close beside the wire 1. The wire 4 and the doubled end of the wire l are placed inside of a tube 9. 1V hen first applied, this tube is cylindrical, but in order to secure the wires therein, the workman inches the tube so that it is dented or attened as is shown at 10. He then shifts his pliers and makes a second dent or flattening in a plane at right angles to the first as it shown at 11. Preferably, one of these two dentsis in a plane parallel to the plane ofthe two parallel parts of the. wire 1, while the other of these two dents is in a plane at right angles to them. The wire 4 may be introduced into the tube 9 so that longitudinal section upon an it occupies the space at once side of the plane just mentioned and contacts with the part 8 as Well as the main body of the .wire l, or it may, as shown in the drawing, be inserted in the same wire 1. The result of the two fiattenings at right angles to one another is to compress the twisted wire 4 and to bring it into close contact with the wire 1 and with the tube 9 sothat it is very diflicult to pull the wires out of the tube 9 after these dents have been made.

In stripping the wires to make this joint, the insulation 5 and 6 is removed completely from the end of the wire 4 but the insulation 2 and 3 is not completely removed from the a section upon the line 6--6 plane as the two parts of the l mouth which is The sleeve 15 wire 1. Instead, it is split as is indicated and the split parts are laid back as shown in Figure 3 for the application of the tube 9. In applying, this tube is preferably forced onto the wire 1 until the end of the tube presses against the undivided part of the insulation as shown at 12 in Figure 7 When the tube has been put in place and pinched in the way described, the split portions of the insulation 2 and 3 are laid along the sides of tlie tube as shown at 13 and. 14 in Figure The joint is covered by a hard rubber casing consisting of a sleeve 15 and a cap 16. has a tapering projecting end 17 and-the cap has a flaring also threaded to co-operate with the threads 17 as shown at 18 in Figures 2 and The threads are easily entered because of the conical shape of the threaded parts. The corners of the sleeve 15 and cap 16 are rounded as shown at 19 to give the finished joint a good appearance. Also the bore of the sleeve and the cap where the wires enter is countersunk or rounded as shown at 20, in order that there shall be no sharp corner to come against the insulation.

In assembling this joint, the insulation is first stripped from the ends of the wires 1 and 4. The end of the wire 1 is then bent upon itself to form a double part 8 and the part of the insulation for the wire 1 which extends from the bend 7 to the end of the bent back part 8 instead of being cut away entirely is only split. The sleeve 15 is slipped over the wire 1 prior to the splitting of the insulation and the cap 16 is slipped over the wire 4 with the mouth of the cap and the conical threaded end of the sleeve toward one another. The sleeve 9 is then passed over the doubled end of the wire 1. The wire 4, if its ends have been frayed, is twisted into a compact sha e and passed into the tube 9 beside the doi bled wire 1. The tube 9 and the wire 4 are moved toward the wire l until the end of the tube abuts against the undisturbed insulation. The tube 9 is then pinched at the points 10 and 11. The insulation 2 and 3 is then placed against the outside of thetube 9 and thesleeve 15l is brought up along the wire 1 until it overlies this replaced insulation. The cap 16 is then brought up along the wire 4 until the threads 18 engage the threads 17.

The cap 16 and sleeve 15 are then rotated relative to one another until the threads are tightly screwed together. For this purpose the sleeve is knurled as shown at 22 and the cap is knurled as shown at 23. During this screwing movement, the inner face of the cap comes against one end of the tube 9 and forces the tube and wires through the sleeve 15 against the undisturbed insulation so that the insulation 2 and 3 is obliged threaded to make an abrupt turn at the inside of the end wall of the sleeve 15. This insulation makes another abrupt turn where it leaves this inner end wall to proceed over the outer wall of the sleeve 9. Thus there lare two abrupt angles in the insulation, two pinched places in the sleeve and the pressing eli'ect of the outer sleeve upon the joint within it, all tending to unite the wires against any pull which might attempt to spread them.

I am aware that numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted otherwise than necessitated by the prior art.

I claim as my invention:

1. In a wire splice, an insulated wire having its insulation split axially of the wire, a tube surrounding the wire and having the split ends of the insulation positioned upon the outside of the tube, and means for clamping the split endsof the insulation against said tube.

2. In a wire splice, an insulated wire having its insulation split axially of the wire, a tube surroundin the wire and having the split ends of the insulation positioned upon the outside of the tube, and means exterior to the insulation for holding it in contact with the tube.

3. In a wire splice, a wire having its insulation split axially, a second wire spliced tothe first wire, means covering said splice and displacing said split insulation away from said first named wire, and :means exterior to said insulation holding it in contact with the first named means.

4. In a wire splice, a wire having its insulation split axially, a second wire spliced to the rst wire, means cover'ng said splice and displacing said split insulation away from said first named wire, and means exterior to said insulation holding itin contact with the first named means,` said two means constraining said insulation into a form having a plurality of abrupt bends.

5. In combination, ing its insulation split axially, a second wire spliced to said first wire, a covering device in two parts exterior to said insulation sur.-

rounding said splice, means for drawing said an insulated wire havl two .parts toward one another, and" means actuated by said drawing for forcing said insulation into an angular s ae.

6. In a wire s lice the com ination with thel skinned over apping ends f a -plurality of insulated wires, of a tube engaged over the overlapping ends of said wires with the insulation of one of said wires engaged over the exterior of said tube, and knurled interfitting insulation members connected to one another to enclose thc sleeve and clamp the insulation of said one wire against said sleeve.

7. En a Wire s lice the combination with the skinned over appin ends of a pair of insulated Wires, of a tu engaged over the overlapping ends of said Wires with the insulation of one of said wires engaged over the exterior of said tube, said tube being i* pinched to grip the Wires in different planes,

knurled members for enclosing the tube, and a threaded extension on one of said knurled 10 members adapted to be threaded into the other knuried member to draw said knured members together and clamp the insuation of said one wire against the pinched sleeve. In testimony whereof I have hereunto subscribed my name in the presence of two sub- 15 scribing witnesses.

JOHN B. GLOWACKI. Witnesses:

CARLTON HILL, JAMES M. OBRIEN. 

